lol. I've already used that answer early on. I guess someone should make a list of all the Pokemon people answered. It's been a long while hasn't it?Colder? Are you hinting at an ice type? Like say Glaceon?
No, I’m pretty sure you’re just being metaphorical, the hotter the guess the closer it is to correct.
Wait so does that mean that answer is a high temperature pokemon? Like perhaps Slugma?
No that isn’t what’s going on is it.
How about Gengar?
If you see in three dimensions
You’ll see only good intentions
It’s the shadow Pokémon and shadows are 2 dimensional and Gengar’s intentions aren’t typically good. So in 3 dimensions you’d see good intentions because gengar is sort of 2d.
Here's a big hint: try to think of figures of speech that mean seeing only good intentions.
Looking on the bright side of life? Shadows by definition are not bright and gengar as a ghost is dead so it’s less than good intentions are the opposite of looking on the bright side of life.
Also you said Marowak was one of the closer guesses and the marowak involved in the gen 1 storyline is a ghost just like good old gengar, that and the slips scope thing.
In addition to that haunter evolves into Gengar by trading and if you are wanting to trade, trade back you have to trust in the good intentions of your trade partner.
I hadn’t noticed the figure of speech clue earlier so if it isn’t gengar I might have a few other ideas.